CVE-2026-31631
published 2026-04-24CVE-2026-31631: In the Linux kernel, the following vulnerability has been resolved: rxrpc: Fix buffer overread in rxgk_do_verify_authenticator() Fix…
PriorityP339high8.2CVSS 3.1
AVNACLPRNUINSUCLINAH
EPSS
0.39%
30.8th percentile
In the Linux kernel, the following vulnerability has been resolved:
rxrpc: Fix buffer overread in rxgk_do_verify_authenticator()
Fix rxgk_do_verify_authenticator() to check the buffer size before checking
the nonce.
Affected
9 ranges
| Vendor | Product | Version range | Fixed in |
|---|---|---|---|
| linux | linux | — | — |
| linux | linux | >= 9d1d2b59341f58126a69b51f9f5f8ccb9f12e54a < 794586789800b16dcbe235452494f4223ac80413 | 794586789800b16dcbe235452494f4223ac80413 |
| linux | linux | >= 9d1d2b59341f58126a69b51f9f5f8ccb9f12e54a < 1c4422d8be81718ecb15d79aedff607323085201 | 1c4422d8be81718ecb15d79aedff607323085201 |
| linux | linux | >= 9d1d2b59341f58126a69b51f9f5f8ccb9f12e54a < f564af387c8c28238f8ebc13314c589d7ba8475d | f564af387c8c28238f8ebc13314c589d7ba8475d |
| linux | linux_kernel | — | — |
| linux | linux_kernel | — | — |
| linux | linux_kernel | — | — |
| linux | linux_kernel | >= 6.16.1 < 6.18.23 | 6.18.23 |
| linux | linux_kernel | >= 6.19 < 6.19.13 | 6.19.13 |
CVSS provenance
nvdv3.18.2HIGHCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:H
vendor_redhat7.0MEDIUM
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GHSA
GHSA-q633-5j2j-rqx5: In the Linux kernel, the following vulnerability has been resolved:
rxrpc: Fix buffer overread in rxgk_do_verify_authenticator()
Fix rxgk_do_verify_
ghsa_unreviewed·2026-04-24
CVE-2026-31631 GHSA-q633-5j2j-rqx5: In the Linux kernel, the following vulnerability has been resolved:
rxrpc: Fix buffer overread in rxgk_do_verify_authenticator()
Fix rxgk_do_verify_
In the Linux kernel, the following vulnerability has been resolved:
rxrpc: Fix buffer overread in rxgk_do_verify_authenticator()
Fix rxgk_do_verify_authenticator() to check the buffer size before checking
the nonce.
Red Hat
kernel: rxrpc: Fix buffer overread in rxgk_do_verify_authenticator()
vendor_redhat·2026-04-24·CVSS 7.0
CVE-2026-31631 [MEDIUM] CWE-805 kernel: rxrpc: Fix buffer overread in rxgk_do_verify_authenticator()
kernel: rxrpc: Fix buffer overread in rxgk_do_verify_authenticator()
A flaw was found in the Linux kernel, specifically within its rxrpc communication protocol. This vulnerability is a buffer overread, meaning the system attempts to read data beyond the allocated memory buffer in the `rxgk_do_verify_authenticator()` function. This could potentially allow an attacker to access sensitive information or cause the system to become unavailable.
Package: kernel (Red Hat Enterprise Linux 10) - Affected
Package: kernel (Red Hat Enterprise Linux 6) - Not affected
Package: kernel (Red Hat Enterprise Linux 7) - Not affected
Package: kernel-rt (Red Hat Enterprise Linux 7) - Not affected
Package: kernel (Red Hat Enterprise Linux 8) - Not affected
Package: kernel-rt (Red Hat Enterprise Linux 8) -
No detection rules found.
No public exploits indexed.
2026-04-24
Published